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compiler: remove unsafe.Pointer(uintptr(v) + idx) optimization

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I have checked this conversion is not needed anymore after the previous
commit, by running various smoke tests of which none triggered this
optimization. The only case where the optimization would have kicked in
is in syscall/syscall_windows.go:76 of the Go standard library.
Therefore, I prefer to remove it to reduce code complexity.
This commit is contained in:
Ayke van Laethem
2023-03-01 22:02:17 +01:00
committed by Ron Evans
parent 4ec1e58aa6
commit ca823f9a0d
3 changed files with 0 additions and 74 deletions
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compiler/testdata/pointer.go
Vendored
-15
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@@ -24,18 +24,3 @@ func pointerCastToUnsafe(x *int) unsafe.Pointer {
func pointerCastToUnsafeNoop(x *byte) unsafe.Pointer {
return unsafe.Pointer(x)
}
// The compiler has support for a few special cast+add patterns that are
// transformed into a single GEP.
func pointerUnsafeGEPFixedOffset(ptr *byte) *byte {
return (*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(ptr)) + 10))
}
func pointerUnsafeGEPByteOffset(ptr *byte, offset uintptr) *byte {
return (*byte)(unsafe.Pointer(uintptr(unsafe.Pointer(ptr)) + offset))
}
func pointerUnsafeGEPIntOffset(ptr *int32, offset uintptr) *int32 {
return (*int32)(unsafe.Pointer(uintptr(unsafe.Pointer(ptr)) + offset*4))
}